Ten Percent Convertible Redeemable Preferred Stock - Additional Information (Detail) (USD $)	0 Months Ended	1 Months Ended			2 Months Ended	9 Months Ended		12 Months Ended	9 Months Ended		9 Months Ended	12 Months Ended			3 Months Ended		9 Months Ended		12 Months Ended	9 Months Ended
	Nov. 10, 2004	Jul. 31, 2013	Apr. 30, 2013	Feb. 28, 2013	Apr. 30, 2011	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2011	Sep. 30, 2013 Subsequent Event	Oct. 21, 2013 Subsequent Event	Sep. 30, 2013 10% Convertible Preferred Stock	Dec. 31, 2012 10% Convertible Preferred Stock	Dec. 31, 2011 10% Convertible Preferred Stock	Apr. 30, 2011 Preferred Stock	Sep. 30, 2013 Beneficial Conversion Feature	Sep. 30, 2012 Beneficial Conversion Feature	Sep. 30, 2013 Beneficial Conversion Feature	Sep. 30, 2012 Beneficial Conversion Feature	Dec. 31, 2012 Beneficial Conversion Feature	Sep. 30, 2013 Minimum
Temporary Equity [Line Items]
10% Convertible preferred stock, authorized											880,000	880,000	880,000
10% Convertible preferred stock, stated value								$ 10.00
Minimum weighted average price of common stock for 60 consecutive trading days to convert preferred stock																				$ 4.00
10% Convertible preferred stock, conversion rate								$ 1.00
Warrant exercise price								1.00		0.60	10
10% Convertible preferred stock, issued					759,773						702,123	706,023
10% Convertible preferred stock, issuance price per share					$ 10
10% Convertible preferred stock, gross proceeds from issuance					$ 7,597,730
10% Convertible preferred stock, unamortized discount														828,300	452,914		452,914
Conversion rate at issuance								2,100,000
Amortization of preferred stock discount						0	68,346								228,946	268,425	684,704	811,452
Common stock issued upon conversion Preferred Stock, shares	1,701,341			39,000							39,000	462,500
Preferred Stock shares converted				3,900													3,900		46,250
Common stock shares required to be issued if the remaining holders of Preferred Stock elect to convert						7,000,000
Common stock dividends, shares		342,857	266,954			347,039
Shares issued for dividend payments		$ 175,050	$ 181,529			$ 356,579			$ 176,990
Shares of stock called by warrants										1,492,482	58,352